Nautel NX400, Руководство по установке

Страница: 46 / 89

NX400 Installation Manual Connecting ac power
Issue 1.0 2017-06-30 Page 6-1
Section 6: Connecting ac power
To connect ac power to the transmitter, perform the following steps:
1. Switch off and lock out the main ac power at the service entrance.
2. Select the appropriate wire size for your main ac power cables. See the NX400 Pre-
Installation Manual for assistance. Ensure the ground wire is insulated, so it does not contact
the transmitter cabinet at any location other than the safety ground connection.
3. Route the main ac power cables in a suitable conduit or cable tray, from the ac power source
to the top of the ac power disconnect switch. Cabinet punches or hole saws will be required
to cut the entry holes for the conduits.
4. Punch the appropriate size hole in the top of the ac switch as follows:
• Use a chassis punch tool (e.g., Greenlee, etc.) to punch the desired size hole in the top of
the ac switch. Make sure the ac input cables will pass safely through the hole.
• Install the cable glands and cable tray connections on the ac switch if desired.
5. Open the ac power disconnect switch’s front door. Connect the ac line input from the power
source to the top
L1
(Line 1),
L2
(Line 2) and
L3
(Line 3) input terminals. Connect the ac
ground to the top ground terminal.
6. Route all load cables from the ac disconnect switch to the transformer cabinet, passing all
conductors (including the ground conductor), as a group through a ferrite toroid (Nautel
Part # LX63, provided in the ancillary kit).
WARNING: Ensure that wiring sizes are appropriate. ac wiring must be
installed by a qualified, locally-certified electrician.
DANGER: Ensure ac power is disconnected and locked out at the
source before proceeding.
Note:
The preferred entry point for ac input wiring is through a hole in the primary side
of the transformer cabinet. There is a cable tray wiring interface cover on the
primary side to connect to your cable tray system, as applicable. Temporarily
remove the cover to pass the primary wiring into the transformer cabinet.